Thaum ntsuam xyuas kev noj qab haus huv thiab kev ntseeg siab ntawm cov hluav taws xob cables, tshwj xeeb tshaj yog cov uas siv hauv kev xa hluav taws xob thiab kev sib kis, kev nkag siab txog kev rwb thaiv tsev zoo yog qhov tseem ceeb heev. Ob lub ntsiab lus tseem ceeb feem ntau hais txog kev ntsuas hluav taws xob yog Tan δ (tseem hu ua lub kaum sab xis poob) thiab qhov cuam tshuam ntawm qhov tawg. Cov kev ntsuas no ua rau cov kws tshaj lij tuaj yeem ntsuas qhov xwm txheej ntawm cov kab hluav taws xob rwb thaiv tsev thiab kwv yees qhov ua tsis tiav ua ntej lawv tshwm sim.
Thaum lub AC voltage yog siv rau ib tug insulating cable, nws coj tsis zoo li ib tug zoo meej capacitor tab sis kuj qhia ib co resistive zog vim lub imperfect rwb thaiv tsev. Qhov kev tiv thaiv tiv thaiv no ua rau lub zog dissipation nyob rau hauv lub rwb thaiv tsev li cua sov, uas yog undesirable.
Tan Delta, zoo li Power Factor, kev ntsuam xyuas muab kev ntsuam xyuas tag nrho ntawm cov xwm txheej ntawm kev thauj khoom kuaj, qhov no, cable systems. Dab tsi yog dielectric kev noj qab haus huv ntawm kuv cable los ntawm point A mus rau point B? Yog tias cov cables yuav tsum tau hloov pauv yog tias ua yuam kev, lub hom phiaj yog txhawm rau kuaj ntau pua ntawm cov cables zoo sib xws, ntsuas lawv txoj kev noj qab haus huv los ntawm ntau cov qauv, sib piv tag nrho cov txiaj ntsig, thiab tsim cov npe "tshuaj" tseem ceeb ntawm qhov peb mus txuas ntxiv nrog kev txhim kho cable.
Lub cable yog cais los ntawm nws cov load nrog qhov kawg qhib thiab insulated los ntawm hauv av. Ib qho hluav taws xob AC, feem ntau yog los ntawm VLF hipot, yog siv rau cable hauv ob peb kauj ruam voltages, feem ntau 0.5 Uo, 0.75 Uo, 1.0 Uo, 1.25 Uo, 1.7 Uo, 1.8 Uo, 2 Uo. rau qhov voltage,VLF @ 0.10 Hz lossis 0.05 Hz. feem ntau yog siv rau kev kuaj TD, txawm tias siv lwm qhov chaw AC voltagetuaj yeem siv tau, nrog kev sib cuam tshuam ntawm cov txiaj ntsig xav tau txij li zaus nyob ntawm:50/60 Hz, AC Serious, lossis Resonant Systems Damped AC OWTS.
